filefield 6.x-1.0-beta3

Bug fix plus bonus feature release - I wanted to put this out in the best known state before dopry had a go at slacking down the module again, removing or reworking the hooks, etc.

So this is "my" last filefield release for the time being, before I go off to other undertakings (trip abroad, diploma thesis, etc.). It's unclear whether I'll get back to filefield maintenance, or if so, when. So you'd better like what dopry makes of it :P

Fixes most pressing bugs that were in the beta2 release:
- #278867: Can't upload a file: Allow all file extensions when none have been specified.
- #280054: 'list' checkbox doesn't work: Make the "List" option work also when disabling the checkbox, not only when enabling it.
- #183864: Limit file size per file and node, #277943: Configure max file size per cck field: File size restrictions, per file and per node.
- Various minor fixes in the code that you probably wouldn't notice as user.

Different formatters for teasers, RSS and views didn't make it into this release unfortunately, even if I had a patch that was nearly there. Judging from dopry's mailed plans, it might take a while until filefield gets this functionality, and others that are in this release but will be redone in a (hopefully) cleaner way. Even if so, please be nice to dopry when I'm away, he just takes the time in order to be more core-like and futureproof.